摘要: |
Research carried out by scientists at Exeter University, and published Last month in the journal Science Advances, set out to examine the spectral composition of artificial light at night (ALAN), which, particularly with the widespread use of electric street lighting over the past 100 years, has eroded the natural night-time environment. The researchers noted that analysis of the spread and extent of this change and its impact had previously relied on measurements of the intensity of light emissions and principally those obtained using panchromatic satellite-borne sensors. But, not only did these sensors provide no information on the spectral composition of ALAN, they were also insensitive to the blue part of the visible spectrum. |